 Traffic volumes rebounded from the late 1990s onward, partially because of the construction of casinos in Northwest Indiana, along with reconstruction of the Dan Ryan, Kingery and Borman Expressways.In June 2005, the Skyway became compatible with electronic toll collection, with users now able to pay tolls using I-PASS or E-ZPass transponders.Chicago's Department of Streets and Sanitation formerly maintained the Chicago Skyway Toll Bridge System.